Abstract
The propagation of converging socond-sound shock waves has been investigated in a counterflow channel of appropriate geometry. With a newly developed method it was possible to measure both the spatial and temporal evolution of the temperature and also approximately the local vortex-line density field produced by the shock front of a heating pulse. Comparing the experiments with numerical simulations it appears that, in contrast to the case of stationary heat transport where the vortex lines move towards the heater, it is likely that in the case of transient heat transfer a drift velocity in the same direction as the counterflow velocity gives a better correlation between the experimental and calculated data.
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